1145236144 has 40 divisors (see below), whose sum is σ = 2530150560. Its totient is φ = 497476608.

The previous prime is 1145236139. The next prime is 1145236181. The reversal of 1145236144 is 4416325411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158404 + ... + 165475.

It is an arithmetic number, because the mean of its divisors is an integer number (63253764).

Almost surely, 2^1145236144 is an apocalyptic number.

It is an amenable number.

1145236144 is an abundant number, since it is smaller than the sum of its proper divisors (1384914416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145236144 is a wasteful number, since it uses less digits than its factorization.

1145236144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323917 (or 323911 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 1145236144 is about 33841.3377986155. The cubic root of 1145236144 is about 1046.2408720591.

The spelling of 1145236144 in words is "one billion, one hundred forty-five million, two hundred thirty-six thousand, one hundred forty-four".